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Veins have a large lumen....

Veins have a large lumen.

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### Step-by-Step Solution: 1. **Understanding the Structure of Veins**: - Veins are blood vessels that carry deoxygenated blood back to the heart. They have a unique structure that includes a larger lumen compared to arteries. 2. **Reason for Large Lumen**: - The lumen of veins is large primarily because blood in veins is under lower pressure than in arteries. This allows veins to accommodate a larger volume of blood without the risk of rupture. ...
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